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    Mercruiser 4.3 Alpha One Roar

    I have a mercruiser 4.3 with an alpha one. The numbers on the side of the upper unit are 1.84R and looks like OC685819. I took it in to get winterized. I had never done it before and didn't have time to figure it out and get it done because I always wait till the last minute to do things and...
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    90 mercruiser 4.3 bogs at WOT - Where is fuel filter?

    Testing out a new used boat and it's been sitting awhile so it won't run at WOT. Bogs and dies. Idle is good and revs good in neutral but not under a load. I thought I would replace the fuel filter as a start. Looking in the service manual I see nice instructions on how to replace a...
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    Mercruiser 4.3 Alpha won't go into reverse

    Hey guys. I've been lurking around here since, just checked my profile, 2008 but I haven't posted much. I can usually find the info I need. Anyway, I just picked up a 1990 mercruiser 4.3 - Alpha 1 and I'm having a few issues before I can even see how much work I have ahead of me. It will...
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